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Java logical operator short-circuiting
Which set is short-circuiting, and what exactly does it mean that the complex conditional expression is short-circuiting?
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Associative arrays in Shell scripts
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To add to Irfan's answer, here is a shorter and faster version of get() since it requires no iteration over the map contents:
get() {
mapName=$1; key=$2
map=${!mapName}
value="$(echo $map |sed -e "s/.*--${key}=\([^ ]*\).*/\1/" -e 's/:SP:/ /g' )"
}
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Error handling in Bash
What is your favorite method to handle errors in Bash?
The best example of handling errors I have found on the web was written by William Shotts, Jr at http://www.linuxcommand.org .
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Why does ++[[]][+[]]+[+[]] return the string “10”?
This is valid and returns the string "10" in JavaScript ( more examples here ):
9 Answers
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Making heatmap from pandas DataFrame
I have a dataframe generated from Python's Pandas package. How can I generate heatmap using DataFrame from pandas package.
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Rolling median algorithm in C
...ial window of values, then perform a binary search to insert the new value and remove the existing one at each iteration.
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Flexbox and Internet Explorer 11 (display:flex in ?)
I am planning to move away from "floaty" layouts and use CSS flexbox for future projects. I was delighted to see that all major browsers in their current versions seem to support (in one way or another) flexbox.
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Difference between a Seq and a List in Scala
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In Java terms, Scala's Seq would be Java's List, and Scala's List would be Java's LinkedList.
Note that Seq is a trait, which is equivalent to Java's interface, but with the equivalent of up-and-coming defender methods. Scala's List is an abstract class that is extended by...
Stopping python using ctrl+c
I have a python script that uses threads and makes lots of HTTP requests. I think what's happening is that while a HTTP request (using urllib2) is reading, it's blocking and not responding to Ctrl C to stop the program. Is there any way around this?
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Set cURL to use local virtual hosts
... applies, but simply pretends the DNS lookup returned the data in your command-line option. It works just like /etc/hosts should.
Note --resolve takes a port number, so for HTTPS you would use
curl --resolve 'yada.com:443:127.0.0.1' https://yada.com/something
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